Apparatus for making heat and sound insulating products



P 2- w. K. NELSON 1,875,644

APPARATUS FOR MAKING HEAT SOUND INSULATING PRODUCTS Original Filed July2. 1'92? 3 Shebts-Sheet 1 Sept. 6, 1932. w. K. NELSON 1,875,644

APPARATUS FOR MAKING HEAT AND SOUND INSULATING PRODUCTS Original FiledJuly 2. 192 3 Sheets-Sheet 2 w. K. NELSON 1,875,644

APPARATUS FOR MAKING HEAT AND SOUND INSULATING PRODUCTS Sept. 6, 1932.

Original Filed July 2. 1927 ISShBQtS-She 3 0 7 6 9 6 W v Au N. I A mm. 6H W 2 J I] I! \l 7/ 7 a W a v///////////W// 0Q w JQAO 7 I a 2 a V 1 f VN 4 f 2:1 I). nfou n0 10 I a mm mm H W n v, sad,

Patented Sept. 6, 1932 WILLIAM K. NELSON, oEeBi-IGAG ILLINQIS Assxe mnNTOJIIINIVEBSALVL amen 8;. LIME oo., ..or oHIoAeo,.1L N0 s,A-CORPORATION ozunmewmriz I Armmms rozrmiixnxie Emm A msoimnumsbLemmdr'nonuocbs 5 My invexitioiizrelates tofapp a tus for Prmducingheatand sound insulating: east prods ucts. r

This application: is a: division. ofg'mygpareiie application Serial No2021;199, filed: Ju1y2,

1927, on; whichii mya lPcatentrt 1 773341.: was:

granted Lon August 26,1930? V v 1 My inventionrrelatesto a newflan'dIHIPIOV'Qd a prouucc made-by a: casting. or lmolding"opera-' .tion in:thezforimof aicenbralbody portion of! cellular mineral mattenvwhieh hasbeen aeraeedxniaterialily so as vLobe: of comparatively great porosity;with two outside body layers formed: ofamnatfial of'eomp'arativelygreater density or lesser 1 porosityand with I fibrous sheets ofmaterial interposed between the respective outside bfody layersand-*th'e' central body portion;

The objeets oi my invention are te-prov-ide ;i'113}31'GV3fi apparat usfor producing the im prov ed' product; te-provide apparatus'which shalbeadeptedf'sr use for producing"produets -of diife'rei1t thieknessesbythe use ofthe same molds and 'to provide apparatus which .shall'be-cepableof use by a continuous process for producing;- blocks of umimproved- "type indicated, such "apparatus being: preferablyeutoniaticxinoperation for producing the flocks to the'best advantage. i

The preferredmeans by whielfIhav'e accolnplished my several objects aredisclosed in the specification by reference:to'ithenaocempanyingdrawings. 4 ThfitWhiChzI believe to be. new and desire to cover byLetters Pat.-

exit; is: set forth in i :he-'c1aiins-..

Inthe drlawings5+ Fig. 1 isa perspecti-Veviewiof myiinproved- 1 block; V

Qis a -t'op-p1an view showing. more or" les "ii-ag zaniiiiati'caliy:one'IEOIIIl'iOZE apparatus iiiyaimproved blocks N Bis avertieal seetion'abView: on 3311 enlarged scale; -.s taken: substaiifiallIya at: line?thesh'eets "of fibrous material ISl'and- 19 there are additional layers2Oland 21 er porou's eel Serial r m-203 1994 Dividedand thisf"applieatioiffiied August{18, 1 I

Fig. 4 is a Iver-tidal :seetionalvieviwtakem at iine-44 0fEig;3;fi 1Fi'glz5 is: an: en largedvdetai l Wiew; p'a'rtly inii. section",\showingfone of thescam.deviees by/ whichsone' iof the' adjustments.:of'rthe moldiisil 5 .effeeeedgr Fig: 6fis' av vertical: cross sectionai'view'r I throughsagform ofmold adaflediomprodub 7 ing; *my iimprozvedwbloek; beingshowniiwi't'hik hering therefo uponits3'opposite"faees;-thelayer 17; having "been rform ed by- 'casti ngflbe tween the 1 sheets: oi? fibrous mate'ri a l here ina-fterr described;Upon the outer ifaces of f' lular inateria1, these'1ayersalso beingprefer m I ablye'ast in e'ontaetwith the'sheets 1 8 aii'd 1 9"the'sheets'being preferablyyperferated at itervals for increasingthe'bonding 'eife'ct and:

the perforations reammy being'stag-gered so as to aYoid materialweakening of the- 7 sheets The l''iyers" 20iand j2'1 are preferably 7r'to the layer '17 except th'ae fihe mate ria1 :-is; preferably? Of''cOHSid'eIab1y 1 gres/eer densitythan thafiof fhebedy IT-f In: thepreferred form: ofca'st', produetj as i ShOWIIiiIlJ Fig.1 ,it'h'endsifand 101164 151 rgfijth; bloekxrare: provided-i wiehi grooves:.22;:s0; g if to provide a space betweensitwoxrabuttingzt blocksl intowhich a suitable binder poured for hardening therein for both keying theblocks together and for causing them to adhere to each other.

. By the provision of the form of product as described comprising theintermediate sheets 18 and 19,, there is a barrier between the aircontent of'one of the body layers and the air content of the adjacentlayer and the product thus produced has all the advantages set forth inmy parent application.

Comin now to an improved form of apparatus or producing my i'mprovedprodnot, as shown in Figs. 2 to 5 inclusive, 23 indicates a turn-tableof any suitable type rotatable about a heavy shaft 24 by the applicationofpower thereto in any suitable manner. The turn-table 23' isprovidedwith a plurality of molds25 upon its upper face, v the machineof the construction shown being provided with sixteen of such molds. 26indicates a mixing device of. any suitable type driven by power from anysuitable source and provided with aspout or chute 27 which overhangs thepath of movement of the molds 25 upon the turn-table 23. With theturn-table being driven at suitable speed'in counter-clockwise directionin Fig. 2, when each-of the molds 1n turn 18 brought. into positionunderneath the chute-27- asuitable amount of plastic material isdelivered from the chute'into'the moldwi-thout stopping the movement ofthe turn-table. This is effected either manually or automatically .as

may be desired, the delivery being preferably eifectedby the use of afunnel of the type shown iii-Fig.6, such funnel also serving to hold thesheets of fibrous material in posis tion in the mold.

The plastic material to be employed for the body of the block ispreferably in the form of an unstable mass of plastic material of a typeadapted to aerate and form a cellular texture and thenv to harden incellular condition. For a material weighing approximately 15 pounds percubic foot, I have used the following ingredients,1000 pounds of stucco(calcined gypsum) of average. good grade, pounds of aluminum sul. phatecontaining water: of crystallization,

35 pounds of calcium'carbonate, 20 pounds of talc, 25 ouncesofcommercial retarder, and 6 pounds of potassium sulphate, all of-suchingredients being finely ground and thoroughly mixed in a-dry state andthen added: ,toa suitable quantity ofwater at the time of use. Y Y

As the turn-table continues to move in counter-clockwise direction afterthe pouring operation, the hardening of the cellularmass proceeds,therate of movement of the turn-table being such that by the time the,table has madeapproximately half of a complete rotation the material hashardened sufficiently to hold its form.' g g Referring now to Figs. 3, 4and 5 which The sleeves 32 of'the two slide blocks 28 of each mold areconnected to each other by means of a rod'33reversely threadedat its endportions for engagement with the sleeves 32 of the slide blocks whichare correspondingly threaded, the 'bar 33 being held rotatably inposition with respect to the table 23 by means of a bracket 34engagingan intermediate portion of the rod. By a rotation of the rod 33by. means of a suitable wrench engaging a head 35 upon its outer end,the slide plates 28 of the mold are moved toward orfrom each other asmaybe desired. 3

Each. of theslide blocks 28 has hingedly mounted thereon a side wallmember 36- which is releasably held in position with respect to theslide block28 by means of a link 37 hingedly connected with the sidewall member and engaging stop members ried by the slide block.

Each of the side wall members vided with, an adjustable face portion 39which is yieldingly held by means of springs 40 in spaced relation withrespect thereto.

Means is providedfor moving the face portion 39 of the side wall membertoward the portion 36 against the action of the springs 40. In theconstruction shown this means comprises a sleeve 41 carried upon theface ofthe member-39 adjacent to the portion 36,

within which sleeve is rotatably mounted a head 42 which is providedwith a pin 43 which engages a diagonally disposed slot-44 in the sleeve41. The head 42, which is rotatably connected with the portion 36 of theside wall member is provided with a horizontally disposed shaft 45 whichprovided upon its outer end with an upwardly extending arm 46. abovedescribed is located'at one end of the side wall portion, with aduplicate structure 38 car- The'sleeve and head construction as isprollti at the oppositeend, the upper ends of the arms 46 beingpivotally connected by means of a link 47 as best shown in Fig. 4. Uponthe inner end of the link 47, I have provided a roller 48 which isadapted in the continued rotation of theturn-table to come intoengagement with a guide member 49 held in' When rigid position above theturn-table.

the mold reaches a position at substantially 18 o from the positionofthe mixer 26, each of the rollers 48 in turn is brought into ennames ae PQst QnBQ Qtt si e wallimembe t o erd thefpo tieu 3.3v a a nst th ctn, o h pr ng w- Th mountof' h qw fthe i f suchi sto. g e the, id wallrn. 9 a movementcorr sponding n e t nt o th deredtl skeessef he ut r a ps of he blQQk. o b ca t he, ar nge en is such lmtthe am. .0 se es to g eh f Par ic es 39' Qf the side Wal msm er t hs desired;movementtowqardthesidewall portions .6 ndspsndent yef hs a ii edr o of such me bers 36 ashey ar p at f ferent distances apart; by the use of the h eade hars 33.;

At opposite ends of the side wall members, I- have hingedly mounted endwall members 5 1, as is best shown in Fig. 4:, These end wallmembers arehingedly mounted directly upon the turn-table, being held releasably inupright position thereonby means of'pivotally mounted links 52 which areadapted by engagementwith stopmembers 53 to hold the end walls inengagement with the ends of theside walls ofthemold. The stop members 53are prcferablyinthe form of rings ext-ending about the turn-table 23.

\Vhenin the movement of the turn-table 23 the rollers 48 of each moldinturn are brought into engagementwiththe cam portion 50 of the guide d9,the inner face portions of the side wall members are moved outwardlyinto spaced relation to the block, which by that time is in condition tohold" its shape, the side Wall members 36: being readily movable outofcontact with thesheets of fibrous mate- A rial, the partially formedblock being held in centered position in the mold by its engage.-

ment with the bottom and end walls of the.

mold, Thesmoldis then carried in the continued rotation o-f'theturn-table under the chute 54; of arsecond-mlxing devlce 55, also drivenbypower from any suitable source. Throughthe, chute 54L, therev isdelivered to the mold'upon opposite faces of the partially formed blockand between the sheets of fibrous material and the adjustedinner faceportions be the side wallsof the. mold a sec;- ond supply of plasticmaterial, the delivery of the material to the mold being-controlledmanually orautomatically as maybe. desired Plates 5 6 arepreferablycarried by the side wall members 39 at their upper edges for assisting,in directing the material from, the chute 54 to the space at oppositesides of a partially formied 'block,and"a, funnel of the form shown in,Fig, 7 may be employed.

The plastic material to be employed; for

the outer layers of the block is preferably ofthe same cellular textureas that ofthe interior body portion enceptthat-the ingreients. ar c aned s s is. term, a idr stab yronger.anrlidsns t pro uct; Th maerialfl sp efer bly n us o m. of en. 1 tab e mass, pla t c mat l yn adaptedjtpaerate and form a; cellular; texture ndj h nto a nin cell laree tie 1 Fa ma er l; weighing anprQX m sly 321mm? per cubic foot," I have used"the following ingredi e n ts,1OOQ pounds of stuccof (calcined gypsum);of, average goo dfgrade, 15; pounds of magnesium fluo" salons containingwater of crystallization, 15 pounds ofcalciumcarbonate, 3 poundsOf-commercial retarder, 16 pounds of potassium sulphate, and 6 pounds ofhydrated li1ne,allof'jsuch ingredients being finely ground and"thoroughly mixed in a dry state andthenaddedto a suitable qua l v tityof Water" at the time ofuse. I V

(As the turn-table 23-continu-es itsrotation incoLmter-clochwisedirection, the sidewall members 39 farelheldcontinuously in spaced relation with respect to;the partiallyformedblock against the actionofthe. springs 40 by means of the guide- 49which'ext'ends about the path of-the mold to;a--poi it atwhich thefacing portions of the block; willh'avebecome hardened suiliciently forholding their form,

such point, inthe constructiohshown, being a tiallyhardcned a atdescribed", theswinging links 3.? and'52 are released from engage? mentwith their corresponding stop means,

and the endWalls 51' and'theside walls of the mold are bothturneddownwardlyf upon their'hinge connections out of contactwith theblock within themold, -Theblock isthen removed-and thc moldis preparedfor the succeeding cast-ing opera jtion The operationof removing theblock from themold ando'fi preparing the mold for another castingopenation maybe effected either manuallyor by suitable" power lmean's;as may be desired.

After the end and side Wall-members of the mold have been spreaddownwardly with respect to each other and the bloclrhas been removedfromthe. mold, a suitable supply ofgrease isgsprayed or otherwiseapplied upon the inner faces of the-Wall members, this be inn effectedpreferably by the use'ofa grease spraying device, 57 of any suitabletype,

After the inner faces of the end and'sidegwall ,members have beenproperly greased, the

members are again raised intogoperative re lation to each other, beingheld the-links 37' and 52, and the sheets of fibrous material aresecured {in positionupon the inner faces of the parts 38 ready for thesucceeding cast ,ing operation upon the continuedirotation of. theturn-table'23; The sheets foffibro-us Inaale artsl8e di 9 t f h ask :11

able manner upon the inner faces of the side form "f portions 59 servingas supports.

walls of the mold so as to be held in position therein but so as topermit the side wall portions 39 to move out of contact therewith whensuch side wall members are moved outwardly by the cam portion 50 of theguide as above described.

I do not wish to be restricted tothe use of any particular form ofgrease for the prepa ration of the mold for the casting operation. Ihave found in practice that very good results areattained with respectto the release of the'mold parts from the hardened cast product and alsowith respect tothe preservation of the color of the product by the useof a grease comprising three parts of castor oiland one part ofkerosene.

The block'shown in the drawings is preferablythirtyinches long, twelveinches wide and from two to six or eight inches thick, though I do notlimit the invention to such size or shape ofproduct.

I have found in practice that blocks can be produced satisfactorily upona commercial basis by the use of a number of molds of coinparativelysimple construction without the employment of a machine of the typedescribed. A mold of this type is illustrated in Figs. 6, 7 and 8 inwhich the base of the mold is in the form of a piece of sheet metal 58of brass or other suitable material, the base as illustrated beingprovided with turned edge Slidably mounted on the base 58, are two sidewall members 60, also made of sheet 'metal'in the illustrated, beingprovided "with strengthening flanges 61 at their upper edges,

- j with supporting base flanges 62 along their bottom edges and withparallel end flanges 68 at their end portions. The base flanges 62 o areof such. width as to afford a stable support for the side wall membersupon the base 58, as well as to provide a close joint between the sidewall members and the base.

I At each end of them old, there is-mounted an end wall member 64 alsoin the formof a sheet of metal, pivotally connected at its 'lower edgewiththe base 58 by means of hinges 65', so as to fit snugly against theends of the side wall members 60 when in their raised position and so asto be movable readily out of contact with the side wall members;

Y In the construction shown, eachot the end flanges 63 is provided withtwo blocks 66 rigidly securedthereon, oppositely disposed V with respectto blocks 67 rigidly mounted on the outer faces of the end wall membersings 68, one abovethe other, as is indicated in Fig. 7 at thepoint wherea portion of one of the flanges 63 is broken away. ,Each

of the blocks 66 and' the adjacent portion of the flange 63 is providedwith an opening 69 at the same levelas that of the upper opening 68, andwith twoopenings 70 at the M same level as that of the lower opening 68,

the openings 70 in the construction shown 7 from each other; and thatwhen the pins pass through the openings68 and the inner openings '30 theside wall members will be held at a distance of four inches from eachother. Y 7 4 In the construction shownpthe pins 'ilare secured inpositionso as to be readily re movable. Each of "the pine isprovidedfith a circumferentialgroove at the end, being cut away at oneside so as to Jermit the pin,

to pass a plate 1'2 carried by the block 66,

he pin being secured in position in engage ment with the plate 72 by apartial rotation of the pin. I

With the members 60 secured in position at adistance of two inchesapart, and with the parts properly greased, two sheets of paper or otherfibrous material Z3 are slipped into position in contact with the facesof the members 60, such sheets of paper being provided preferably withstaggered perforations 7 i therethrough. A tunnel is then preferablyplaced in position, serving to hold the sheets of fibrous material inposition as-illustrated in Fig. 6, such tunnel comprising side wallmembers 75 connected at their ends by bars 1? 6. Vlith the parts in thepositions as. above specified, the body of theblock is poured and isgiven an opportunity to harden suliiciently to hold its form. The upperedge of the block is then dressed off even with the upper edges of themold, after which the pins 1 1 are removed for enabling the side wallmembers to be moved into spaced relation with respect to thepartiallyformed block,

the block being held in position in the mold by its engagement with the,bottom wall there of. In Fi 7, the partially formed blccl: is. indicatedby the numeral 77. In the ,preferred form of practice of my inventionfor ordinary purposes, the side wall members will be spaced at adistance of one-half inch from the partially form-ed block ateach facethereof. it different form of funnel will then be placed'in position,comprising side wall portions 78 connected at their, ends bybars 79which in turn are connected by an intermediate longitudinally extendingstrip .80, this construction serving to permit material to bepo-uredatfeach side of thepartially' formed block while at the same timeprotect ing the edge "of the b'loek. After the second pouring operationand the hardening of the I, block-sufficiently for holding its shape,the

material is again trimmed off even with the upper ec of the side wallmembers-and the {block is removed from the mold.

Vhfle I prefer to employ some such strucas above described, I, wish tohave it under-- stood that I do not des'ireto limi t'myinvention to thepa-Tticdlar forms of apparatus as shown, except so far as "Certain ofthe f claims are -speeifioa lly so "limited, since it is evident thatchanges might we'll be made without departing from the-spirit o f anyin- Vention. I

Iola im: 1. An apparalms for' making a sound insulating product,eoi'npri'sing in oombination a bottom member, 'end wall mem:

bers pivotally mounted =on sai'd bottom b'er'on aixesa'ta fixeddistanoeapart, side wall abutting at their endsfagainst said end Wall membersand adjustable between the-fend wall members toward and firo'm eachother for the production of products of different thicknesses, and meansfor holding said wall members releasably in jcooperative relation for"the formation of a blo'c'k.

2. An apparatus for making a heat and sound insulating produ'ote'o'mpnis'i'ng Sin com-i 'binati'on a bottom member, fenel wa'lls PIV-o'tally mounted "on said bottommember, side walls pivotally mounted attheir lower ends above said bottom member "in adjustably spaced relation'between'theend walls, swing ing links oarried'by said walls ontheir'outer, faces, and 1 means adapted by engagement with said links tohold Said walls ireleasably inoperative position.

Am apparatus didr maliing a heatsand' i it soundl'HSHdHiJlHg'PIQdHOt'OOmPIISI-HgH1 combination =11 bottom memben, endwalls p1V0tally mounted on said bottom member, blocks ture as thatdisclosed bya'ny drawings anc'l heat and 1 members between saidend'wallmembers andmeans adapted automatically when the walls are brottghitj totheir raised position to meld q the Walls, releasably in such raisedpositions 5: An apparatus I for makingsaj'h'eat and sound insulatingprodacaeo m-pnsingtnoomendfwa lls' 'pi' v dt m meii iber, -si'de unseena b6ttom member ally mounted onsa-id hot; 1 walls pivotally moanteoaltliiheir lower ends above said bottom member in adjastably sp'aoefdfrelation between -the end walls, and meansforholdingeaeh'o f said'wall's position independently of the ative raised otherwall's. I

6. apparatus ior fma ki ng binat-ion -a bottom member, end walls pivot--anest and soundinsulatingproduet;comprisingin conb all "mounted on saidbottom member; si de Walls 'pivdtally mounted at their lower ends abovesaid bettomgmember in 'adjustably spaced relation between the end walls,

members ,in outwardly spaced relation with res-ped't to atleast three of*said walls, and horizontally pivdted members carried bysalil Wa l ls ontheir outer t'fiace's adapted orma lly in ob1ique pesi'tion to engagesaid step members wli'enlthewal'ls area-n waised pos'iti'on holding"said wa lls releasably 'in said raised position. I V Y 71% a "paraiiusfor sound iii-sill bination a bottom; member, o positel disposed endwalls pivdtally mounted 011 -fi1 'e(l a he at and axes on said bottommember i-nslpaeed rel-m tion to each other, slideblodks movasly mounted{on said bottom member *in spaoe'd parallel position with respe'et to"each other ating produdt oompri'sing com-:-

*8. An apparatus for making a heat and slidab'ly mounted on said bottom,member, side walls pivotally mounted on said slldably mounted blooksand extending from one to side Walls pivotallg'v mounted on horizontalaxes atthe inner edges ofv said slide blocks and extending from one tothe other o fsaid H the other of said end walls, links pivotal 1ymounted on the outer 'faces of said side walls,

means carried by said slide b'loeks' adapted L engagement with the'linksto hold said side 85 walls releasably in operative position, and

other releasable means "for holdingthe end Walls in operative position"a'gainstjthe ends a ofsaid side walls.

4;. An apparatus for making a heat and 50 sound insulatingproduct,-compr1smg 1n combination a bottom member, end walls pivotalltmounted on said bottom member, side walls pivotally mounted atthei-rlower ends end walls, and means carried by said side walls adapted:by engagement WithLsaid slide 7 bloeks respeotivelyffor holding 5 saidside Wallsreleasably in raised position.

9. An apparatus for makin a heat and sound insulating productcomprisingin "combination a bottom member, oppositely'dis-i posed endwalls pivotally mounted on fixed axes on said "bottom member in spacedfella-1 tion'toeaeh other and adapted to swing-dub, wardly, sidewallspivotally mounted at their lower ends above said bottom meI I-Iber'in'ad- 7 jus'tably spaced relation between the end walls and eachcomprising an outer member} above said bottom .memberin 'adjustably andafacing member in adjustablyspaeed 37: spaced relation between the endwalls, and 19b relation to each other, and means forholding-- at leastthree of said walls releasably in raised position. '7 I f 10. Anapparatus for making a heat and: .5; sound insulating product comprisingin com-v bination a bottom member, oppositely disposed end wallspivotally mounted on fixed axes on said bottom member in spaced relationto each other-and adapted to swin'goutlbjwardly, side wall memberspivotally mountedat their lower ends above said bottom member inadjustably spaced relation be tween the end walls, facing members in imwardly spaced relation to said side wall mem- 153 bers, yielding meansfor pressing said facing members inwardly away from the side walls,means for moving said facing members outwardly toward said side wallsagainst the action of'said yielding means, and means for holding atleast three of said walls releasably in raised position.

Y 11. An apparatus for making a heat and sound insulating productcomprising in combination a bottom member, oppositely dis- 252 posed endwalls pivotally mounted on fixed axes on said bottom member in spacedrelation to each other andadapted to swing outwardly, side wall memberspivotally-mounte'd'at their lower ends above said bottom 30,; member inadjustably spaced relation between the end walls, facing members in inswardly spaced relation to said side wall members, yielding means forpressing said facing members inwardly away from the side walls, meansfor moving said facing members'outwardly toward said sidewalls againstthe action of said yielding means, outwardly extending rock shaftscarried by said side walls and connected with said moving means 40 foroperatingthem, and means for holding at least three of said wallsreleasably in raised position. v

12. An apparatus for making heat and sound insulating cast products,comprising in combination a travelling carrier, a plurality of molds onsa1d carrier, means at one stage of the travel for delivering into eachof said molds in turn anunstable mass of plastic porous material aeratedto form a cellular textureand adapted to remain in a stable cellularcondition, means forspacing the side walls of each of said molds in turnfrom the partially formed product after the material is in condition tohold its form, and" means at another stage of the travel for deliveringinto each of said molds in turn on the opposite sidesof thepartiallyformed product additional unstable masses of plastic porous materialaerated to forma cellular textureand adapted to remain in a stablecellular condition. I 1

'13. An apparatus for making heat and sound insulating cast products,comprising in combination a travelling carrier, a plurality of molds onsaid carrier, means at one stage of the'travel for delivering into each;of said molds in turn an unstable mass of tomatically at a later stageof the travel '7 to space the side walls of each of themolds 7 plasticporous material aerated to form a cellular texture and adapted to remainin a stable cellular condition, means adapted an.-

in turn from the partially formed block after the mass is in conditionto hold its form, and

means atanother stage of the travel for deliverin'g into each of saidmolds 'in'turn at the opposite faces of the partiallyformed' castproduct additional unstable masses of plastic porous material aeratedtoform a 8t cellular texture and adapted to remain in a stable cellularcondition, y

14. An apparatus for making heat and sound insulating blocks, comprisingin combination a continuously driven turn-table, a plurality of moldsarranged about said turntable, means for applying a thin film of greaseto the inside faces of the walls of each mold in turn as it reaches apredetermined position in its movement, means for delivering to eachmold in turn as it reaches a second predetermined position an unstablemass of plastic porous material aerated to form acellular texture andadapted to remain in a stable cellular condition, means for spacing I,

the'side walls of each of said molds in turn from the partiallyformedblock after the plastic material is in condition to hold its form,and means for delivering to each mold in turn' at the oppositefaces ofthe partially formed block as the mold reaches a third I predeterminedposition additional unstable masses of plastic porous material aeratedto form a cellulartexture and adapted to remain in a' stable cellularcondition.

l5 An'apparatus for making a heat and sound insulating product,comprising in comfrom centered position between said end wallmembers,and means for holding said wall members releasably incooperative relation for theformation of a block. V

16. An apparatus for making a heat and sound insulating .productcomprising in combination a bottom member, oppositely dis posed endwalls pivotally mounted on fixed axes on said bottom member in spacedrelation to each other, slide blocks movably mounted on said bottommember in spaced parallel position with respect to each other, meansmounted below said bottom member and extending upwardly through openingstherein adapted by an adjustment to move said slide blockssimultaneously toward and from centered position between said end,walls, and side walls pivotally mounted at their lower edges on saidslide blocks and extending from one to the other of said end walls. 1

17 An apparatus for making a heat and sound insulating product,comprising in combination a bottom member, end wall menbers pivotallymounted on said bottom member on axes at a fixed distance apart, sidewall members between said end wall members and abutting at their endsagainst said end wall members and adjustable between the end wallmembers toward and from each other for the production of products ofdifferent thicknesses, and means for releasably connecting said sidewall'members with said end Wall members for holding the walls in theiradjusted raised position.

18. An apparatus for making a heat and,

sound insulating product, comprising in combination a bottom member, endwall members pivotally mounted on said bottom mem-. her on axes at afixeddistanee apart, side wall members between said end wall members andabutting at their ends against said end wall members and adjustablebetween the end wall members toward and from each other for theproduction of products of difierent thicknesses, outwardly projectingflanges carried by said side wall members at their opposite ends, andmeans for releasably connecting said flanges with said end wall membersfor holding the walls in their adjusted raised position.

19. An apparatus for making a heat and sound insulating product,comprising in combination a bottom member in the form of a plate ofsheet metal having its side portions turn-ed downwardly in the form ofsupporting flanges, end walls pivotally mounted at their lower ends onsaid bottom member on axes at afixed distance apart, side wall memherein the form of plates of sheet metal having their lower edges turnedoutwardly to provide supporting bases so as to be adjustable between theend wall members toward and from each other and having outwardlyprojecting flanges at their opposite ends abutting against said end wallmembers and means for releasably connecting said end flanges of the sidewa 1 members with the end walls for holding the walls in their adjustedraised position.

20. An apparatus for making a heat and sound insulating product,comprising in combination a bottom member in the form pivotallyoutwardly to provide supporting bases so as to. be adjustable betweenthe'endwall members toward and from each other and having outwardlyprojecting flanges at their oppo-

